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Grace [21]
2 years ago
10

Use Target Reading Skills After you read the section, reread the paragraphs that contain definitions of Key Terms. Use all of th

e information you have learned to write a meaningful sentence using each Key Term. a. chemical equation:​
Chemistry
1 answer:
Ksju [112]2 years ago
3 0
A_______________________
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Based on the types of elements in the compound are there ionic or covalent? A. KCI B.NO2
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Which of the following statements concerning equilibrium constants is true? The equilibrium constant of the reverse reaction is
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When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is not affected.

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Read 2 more answers
The rate constant for a certain reaction is measured at two different temperatures:
Talja [164]

Answer: The activation energy Ea for this reaction is 22689.8 J/mol

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}]

k_1 = rate constant at temperature T_1 = 2.3\times 10^8

k_2 = rate constant at temperature T_2 = 4.8\times 10^8

E_a= activation energy = ?

R= gas constant = 8.314 J/kmol

T_1 = temperature = 280.0^0C=(273+280)=553K

T_2 = temperature = 376.0^0C=(273+376)=649K

Putting in the values ::

ln \frac{4.8\times 10^8}{2.3\times 10^8} = \frac{-E_{a}}{8.314}[\frac{1}{649} - \frac{1}{553}]

E_a=22689.8J/mol

The activation energy Ea for this reaction is 22689.8 J/mol

3 0
3 years ago
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